#prob 48 
x=var('x')
y=function('y',x)
diffeq=y-x*diff(y,x)+( diff(y,x)/sqrt(1+(diff(y,x))**2))
sol=desolve(diffeq,[y,x])
sol

SageDays/Kreyszig-1.6-48 (last edited 2010-08-11 11:51:29 by PraveenKumar)